K9 optical glass disc K9 round glass disc round glass disc round glass K9 special for scientific research optical experiment

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K9 Optical Glass for Scientific Research and Teaching of Uncoated Optical Element Experiment Equipment of K9 Elliptical Mirror

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Zinc Rod Zinc Metal Anode Good Conductivity Smooth Surface For School Scientific Experiment Research 12Piece

Zinc Rod Zinc Metal Anode Good Conductivity For School Scientific Experiment Research 12 Pcs

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K9 Flat Convex Lens Diameter 12.7mm Near Infrared Antireflection B Film Wavelength 650-1100nm Optical Scientific Research

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Customized High Temperature Porous Foam Carbon Battery Electrode/Catalyst Carrier for Scientific Research Experiment

Scientific research experiment sputtering Cu target, vacuum coating copper（4N,5N)

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